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First-year Sloan Digital Sky Survey-II (SDSS-II) supernova results: consistency and constraints with other intermediate-redshift datasets (2009)

Lampeitl, H.,
Nichol, R. C.,
Giannantonio, T.,
Shapiro, C.,
Bassett, B.,
Percival, W. J.,
Davis, T. M.,
Dilday, B.,
Frieman, J.,
Garnavich, P.,
Sako, M.,
Smith, M.,
Sollerman, J.,
Becker, A. C.,
Cinabro, D.,
Filippenko, A. V.,
Foley, R. J.,
Hogan, C. J.,
Holtzman, J. A.,
Jha, S. W.,
Konishi, K.,
Marriner, J.,
Richmond, M. W.,
Riess, A. G.,
Schneider, D. P.,
Stritzinger, M.,
Van Der Heyden, K. J.,
VanderPlas, J. T.,
Wheeler, J. C.,
Zheng, C.

Abstract

We present an analysis of the luminosity distances of Type Ia Supernovae from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey in conjunction with other intermediate redshift (z97% level from this single dataset. We find good agreement between the supernova and BAO distance measurements, both consistent with a Lambda-dominated CDM cosmology, as demonstrated through an analysis of the distance duality relationship between the luminosity (d_L) and angular diameter (d_A) distance measures. We then use these data to estimate w within this restricted redshift range (z. Comment: 13 pages, 7 figures, accepted for publication in MNRAS

Publication details

Download	http://arxiv.org/abs/0910.2193
Repository	arXiv (United States)
Keywords	Astrophysics - Cosmology and Extragalactic Astrophysics
Type	text